PHP-CPP 2.4.3

• Fixed __get() and related methods for PHP version 8 and up (such methods caused a segfault)
• Fixed Php::Traversable class for PHP version 8 and up (this caused a warning about an abstract class that could not be instantiated)
• All Php::Traversable classes now automatically have a getIterator() method
• Fixed crash when using comparison operators on a non-string Php::Value to compare it with a "const char *"
• Some internal changes to variable-length-arrays compiler to get broader compiler support
• Changes to the build mechanism (we no longer build special object files for shared and static libraries)